Exhaust manifold



FIG. 1 is a front elevational view of an exhaust manifold showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left elevational side view thereof;

FIG. 5 is a right elevational side view thereof; and,

FIG. 6 is a perspective view thereof. 

CLAIM The ornamental design for an exhaust manifold, as shown. 